Chung juan: Proper spring rolls. Extremely phallic... Almost approaching "anything...if you are brave enough" status. Usually served in proper restaurant settings with rotating table centerpiece and 8+ guests. A Shanghai phenomenon.
Dan juan: 'Egg rolls'. Much more miniaturized. Still phallic nonetheless. Most of the frozen, instant fry, just add oil varieties that you will find in any Chinese or Korean supermarket falls into that category...
@clcustom1911 : BON APPETIT... That looks mighty awesome there. Is that dark vinegar in the bottom pic? Dark vinegar is renowned as a natural antiseptic in China. Even today, in the most advanced hospitals in Shanghai or Beijing, rooms and corridors are fumigated with methanol canister powered dark vinegar steamers. Pungent, but in a good way.